How to move 18 Servos siumltaneously

@zoomcat

Yes I have notice there's a price difference between a Arduino mega board and a standalone servo controller. Am I right to say that the Pololu Servo controller do not need to be connected to any other external devices for it to function? Just having a power source of approximately 18A+ would suffice? In addition, is the servo controlled through the arduino software as well? Sorry lots of noob-ish question as I do not deal with servos and servo control all that much...